Coffeepot



B. 1:1.l HERRING COFFEEPOT J/ Flled Dec,13. 1926 Patented Jan. 3, 1928.

LSSMM VUNITED STATES PATENT OFFICE.

BURTON R. I-EIERRING, 0F CHICAGO, ILLINIS.

Application led December 13, 1926. Serial No. 154,332.

` The present invention is directed to a coffee pot which is preferably integrally made of glass, although it may be of porcelain or other materials, and in which provision is made for the pouring of the water in a receptacle in the base of the coii'ee pot and there subjecting it to boiling temperature under such conditions that as soon as lwater is brought to a boil, and steam is gen* erated, it will serve to suddenly eject the boiling water onto the ground or powdered coffee housed in the upper portion ofthe coffee pot in position to permit the boiling Water to strain or percolate through the coffee and into an interior receptacle for containing the infusion of coffee readyfor pouring.

lhepot as a whole is so designed that only the proper amount of water can be employed in the preparation of the coffee, and so that every part of the coffee pot, in which coffee grounds oi the like might tend to accumulate, will be accessible for cleaning or scouring. rI he coffee pot is preferably constructed of glass in order to permit observation of the process undei way in the preparation of `the coffee, and in order to enhance the attractiveness of the coffee pot as an article for table service.

Further objects and details will appear from a description of the invention in connection with the accompanying drawings, whereinn Figure l is a perspective view of the coffee pot of the present invention;

Fig. 2 is a sectionalelevation thereof showing the position occupied by the water before boiling; and Fig. 3 is a cross sectional view taken on line 3--3 of Fig. 2.

The coffee pot as a whole comprises a generally cylindrical body l() preferably formed of glass, which body is provided in its upper portion with a hemi-spherieal upper cavity 46 11 which is coi'ed or cast in the glass body, and which is designed to contain the charge 12 of coffee grounds or powder, which charge is preferably `poured into a paper filter of generally bowl shaped formation with its center immediatelyabove an orifice 14 which leads `to a lower chamber 15 cored or hollowed out in the interior of the coffee pot, which chamber is preferably tapered or elon- Y gated laterally as at 16 and terminates in a spout 17 having a lower lip 18 projecting out wardly from the side of the coffee pot about midway from top to bottom thereof.

The lower chamber l5 is of rounded configuration aiid is provided with a relatively thin lower or base wall 19 of downwardly bulging formation having its extreme depression atthe point 20, and below and around the lower portion of the chamber 15 is formed a water chamber 21 of partially annular formation in the upper portion which surrounds the wall 19 and of fully cylindrical formation in its lower or base portion immediately above the bottom 22 of the coffee pot. n

On the rear side of the pot opposite to the spout 17 is a handle 23 which merges into the side of the body at a point near the base thereof, and which at its upper end is connected with the body by a bridge portion 24, the top of which is flush with the top rim of the body. The handle is provided with a port or passage 25 communicating at its lower end with the water chamber in the body, and flared at its upper end to afford a mouth 26 into which the water may be poured.

inside of the body, and in adjacent relation to the handle, is a `vertically extending tubular channel 27 which, at its lower end, communicates with the water chamber at a point adjacent to the lower end of the port or channel 25, and the upper end of the channel 2'? is inwardly turned to afford a discharge opening 28 for ejecting boiling water into the upper chamber and above the dry coffee therein contained.

' The upper end of the coffee pot is closed by means of a lid 29 which is preferably connected by `means of a hinge 30 to the" front edge of the coffee pot, and the lid is provided on its rear side with an extension 81 which overlies the upper end of the han die, which extension is provided with a depending plug 32 adapted, when the lid is lowered, to `register with the upper end of the water passage 25 so as to close the same against the ejection of water through said passage. The lid is` preferably provided with a knob 33 and the lid as a whole is preferably constructed of silver or other metal, although it might be made of glass, if so desired.

In use, a charge of coffee grounds or powder, in determined amount, is poured into the bowl shaped paper filter, and water is then poured into the water inlet passage Q5. As soon as the water rises above the downwardly protruding base oi the lower chamber l5, that is above the point 20, a water seal will be established which traps a quantity ot air in the Water chamber, and thereafter the continued pouring ot water will cause a compression o' the air until the air pressure becomes sutlicient to prevent the further rise ot water in the water chamber atter which continued pouring` will Simply have the ellcct ot lilling up the small inlet passage 25, and the discharge pas .ge 27.

Thereafter it the cottee pot is placed upon a burner,'the rise in temperature will trst elect a slight expansion ot the trapped air in the upper part' of the water chamber, which may have the etlect ot torcing out a small amount ot water trom the water dis charge passage 27, and which will serve to preliminarily `moisten the dry cotl'ee in vthe uppeil chamber. ils soon, however, as the water-is brought to boiling temperature, the sudden release ot steam into the upper portion ot the chamber will have the eltect ot suddenly ejecting the main body ot water in the Water chamber,tliereby forcing boiling water in substantial volume up through the discharge passage 27 and onto the charge of cotl'ee, and such ejectment ot water under steam pressure will continue until the water has been lowered to the level of the base ot the lower chamber l5, as indicated by a heavy ybroken line in Fig. 2, after which the air trap or seal will be broken and little, it any, additional Water will be ejected. Thereafter, after the trap or seal is broken, steam will continue to be formed in the water cl'iamber and escape through the passage 27 into the upper cavity where the ground or powdered cotee is contained. A

By properly proportioning the `capa-city ot the Water chamber, the amount ot water ejectedup and over the cotl'ee powder may be exactly regulated, so that the dry or slightly moistened cotlee Will be suddenly merged in a predetermined volume of boiling water which will seep or percolate through the collec, and through the filter paper thereby securing a proper intusion ot the coffee under proper conditions to secure and retain the i'lavor and aroma.

The water, filtering through the powdered coffee will drain down into the lower chamber l5 which will maintainV a temperature slightly below the boiling point ot water, so that the coltee infusion Will be maintained at the correct temperature to preserve the flavor and aroma unt-il poured out of the spout.

By integrally forming the cotlee pot and coring out the interior in the manner indicated, and by forming the pot as a whole of glass or porcelain, it will serve to retain a suiicicntly high temperature to maintain the collec in proper condition tor a considerable period ot time, and at the same time the pot as a whole will be tree troni joints or connections, and by retaining the rounded contiguration oct the chamber, no opportunity will be atlorded tor the accumulation ot sediment. At the same time, the contig uration of the interior chamber is such as to permit easy access to all portions thereof tor the purpose o't cleaning or scouring.

Furthermore, by 'torniing or molding the coltee pot ot' glass it will be possible to obserre the action going on in the interior ot the pot, which will tend to attract interest and attention to the cotiee making oiiieratilfni and add to the attractiveness oi the dei'ice for table service. lhe deyice as .i whole is entirely selt-contained end enables the collec to be prepared in a certain and exact inauner and without the necessity for any great care or attention zitter the proper amount ot coi'lee powder has been deposited and the pot iilled to capacity with aten I claim:

l. il cottec pot integrally7 toi-med ot rit reous material und cominising` an upper bowl ,shaped chamber tor collec and a lower #haue ber ot generally globular loiinution coininunicating with the upper chamberl` the, lower chamber terminating at one side `in a laterally opening spout. and the hase ot the pot. below and partially around the glolnil" lower chamber, constitution; a water chain l wall ot the globular lower chamber protrudiniij dowi diy into the water chamber to aitord a water seal adapted to trap air in the upper portion ot the water chamber when water is admitted and u discharge passage tor boiling` water leadingupwardly troni the water chamber and terminating above the upper bowl shaped chainber and adapted to provide lor the discharge of water under pressure ot steam trapped in the upper portion ot the 7ater chamber. sul stantially as described.

2. A coffee pot inlngrally 'formed ot ritreous material and coinrn'ising au upper howl shaped chamber tor coi'tee and a lower chamber oit generally globular torimuion communicating with the upper cheminer.4 the lower chamber lern'iiuating at one, Side iu :i laterally opening spout, and the base ot the pot, belo and partially around the globu lar lower chamber, coiistitutingl a water chamber, the wall ot the globular lower chamber protruding donmwardly into the water chamber to afford a water seal adapted to. trap air in the upper portion ot the water chamber when water is admitted, a discharge passage -tor boiling water leading upwardly 'trom the water chanlber and terminating above the upper bowl shaped lllfi lill intenta chamber and adapted to provide 'for the discharge of water under pressure of steam trapped in the upper portion or the water chamber, and an integrally formed laterally positioned handle provided with a water inlet passage leading from its upper' portion to the water chamber, substantially as described. y

3. A coilec pot integrally formed of vitreous material and comprising an upper bowl shaped chamberl 4[for col'lee and a lower chamber ot' generally globular formation communicating with the upper chamber, the lower chamber terminating at one side in a laterally opening spout, and the base oi? the pot, below and partially around the globular lower chamber, constituting a water chainber, the wall ot the globular lower chamber protruding downwardly into the water chamber to allord a water seal adapted to trap air in the upper portion ol the water chamberwhen water is admitted, a discharge passage for boiling water leading upwardly from the water chamber and terminating above the upper bowl shaped chamber and adapted to provide Ator the discharge ot water under pressure oil steam trapped in the upper portion olf the water chamber, an integrally formed laterally positioned handle provid-ed with a water inl-et passage leading from its upper portion to the water chamber, and a hinged lid provided with a plug adapted when the lid is lowered to close the Lipper end of the water inlet passage, substantially as described.

Il. A coliee pot` comprising au upper cham` ber for collec and a lower `Chamber ot generally globular lorniation con'ununieating with the upper chamber through a central orilice of reduced diameter, the lower chamber terminating at one side in a laterally opening spout and the base of the pot below and partially around the globular lowc chamber constitutinga water chamber, the wall ot the lower globular chamber protruding downwardly below the base of 'the spout int-o the water chamber to allord a 'ater seal adapted to trap air in the upper portion ot the water chamber when water is admitted, and a discharge passage-tor boiling water leading upwardly from the water chamber and terminating above the upper chamber and adapted to provide :for the discharge ol water under pressure oi' steam trapped in the upper portion ot the water chamber, substantially as described.

L5. A colli'ee pot comprising an upper chamber for collec and a lower chamber of generally globular formation communicating with the upper chamber through a central orilice ot reduced diameter, the lower chainber terminating at one side in a laterally opening spout and the base ot the pot below and partially around the globular lower chamber constituting a water chamber, the wall. ot the lower globular chamber protruding downwardly below the base o1 the spout into the water chamber to ailord a water seal adapted to trap air in the upper portion or tho wat-er chamber when water is admitted, a discharge passage tor boiling water leading upwardly trom the water chamber and terminating above the upper chamber' and adapted to provide for the discharge of water under pressure ot steam trapped in the upper portion of the water chamber, and an integrally formed laterally positioned handle provided. with a water inlet passage leading troni its upper portion to the water chamber, substantially as described.

t3; il. collec pot comprising an upper chamber tor collec and a lower chamber of genorally globular formation comn'iunicating with the upper chamber through a central orifice ot reduced diameter, the lower chainber terminating at one side in a laterall opening spout and the base ot the pot below and partially around the globular lower chamber constituting a water chamber, the wall of the lower globular chamber protruding downwardly below the base ol' the spout into the water chamber to atlord a water seal adapted to trap air in the upper portieri olf the water chamber when water is admitted, a discharge passage for boiling water leading upwardly 'from the water chamber and tern'iinating above the upper chamber and adapted to provide for the dise charge ot water under pressure ot steam trapped iu the upper portion or" the water el iaer, an integrally :termed laterally positioned handle provided with a water inlet cassatie leadino1 trom its uaaer iortion to the water chamber, and a hinged lid pro vided with a plug adapted when the lid is lowered to close the upper end oil the water inlet passage, substantially as described.

BURTON lt. HERRING. 

